CN105021475B - Can the different miniature tension-torsion fatigue testers placed and test orientation - Google Patents

Can the different miniature tension-torsion fatigue testers placed and test orientation Download PDF

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Publication number
CN105021475B
CN105021475B CN201510497033.6A CN201510497033A CN105021475B CN 105021475 B CN105021475 B CN 105021475B CN 201510497033 A CN201510497033 A CN 201510497033A CN 105021475 B CN105021475 B CN 105021475B
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China
Prior art keywords
underbeam
supporting plate
hole
testing machine
rotating shaft
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Expired - Fee Related
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CN201510497033.6A
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Chinese (zh)
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CN105021475A (en
Inventor
付巳超
陈刚
陈旭
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Tianjin University
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Tianjin University
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Abstract

The present invention relates to the miniature tension-torsion fatigue tester that different can be placed and experiment is orientated.One 90 degree of switching mechanism is installed on miniature double column tension-torsion fatigue testers;Realize that testing machine underbeam above mechanism relative support plate is overturn to horizontally or vertically position.The 90 degree of upsets of testing machine main body are realized by rotating shaft and rolling bearing, turning operation is simple, mechanism simple;It due to being provided with O-ring between the supporting plate and beam of relative upset, can prevent from wearing between supporting plate and underbeam during turning operation, while can also play cushioning effect to rotary movement, in case testing machine body drops collision in operating;Compared with conventional switching mechanism, this structure uses manual overturning, simple in construction, it is easy to operate effectively, suitable for miniature tension-torsion testing machine is horizontal, vertical orientated conversion.Structure type of the present invention can be oriented horizontally or vertically requirement with the miniature pull and torsion test of flexible adaptation, solve the problems, such as that existing tension-torsion fatigue tester can only single-orientated placement.

Description

Can the different miniature tension-torsion fatigue testers placed and test orientation
Technical field
The present invention relates to a kind of fatigue tester, more particularly to the miniature tension-torsion fatigue that different can be placed and experiment is orientated Testing machine.
Background technology
Traditional tension-torsion fatigue tester, such as MTSDesktop test system, in order to which guarantee test driving structure is steady Qualitative and load, the accuracy of displacement measurement system, generally use start, measurement axle vertical start are disposed vertically structure. But as what the development of experimental technique and material or structural mechanical property were studied deepens continuously, it is desirable to by fatigue test and immersion Experiment, microcosmic observation means etc. combine, and carry out the experiments such as online fatigue corrosion, fatigue microscopic observation in situ, this is required Testing machine uses the horizontal positioned structure of action shaft, to install immersion corrosion device, meets the observation requirement such as SEM, X ray.Mesh Original position stretching/compression fatigue Material mechanics test platform etc. is horizontal positioned under preceding existing ZL201110305113.9 ESEMs Micro fatigue testing machine.Mainly by limit driving load or make dynamic frequency and meanwhile reduce mitigate start measure clamp structure come Improve control stability and sample action shaft centering.Thus, existing level places the test load of fatigue tester, frequency model Enclose and be restricted, and the centering of sample action shaft is not easy to adjust.Fatigue experimental device action shaft is disposed vertically structure and water Placing flat structure is each advantageous, and there is presently no can flexibly change action shaft placement direction to adapt to the tired of different tests orientation Labor testing machine.
The content of the invention
The purpose of the present invention is different can to place and test the miniature tension-torsion fatigue tester structure shapes being orientated by a kind of Formula, which is realized, can either be disposed vertically the enough horizontal positioned experiments of experiment and can, fully combine and be disposed vertically structure and horizontal positioned structure The advantages of:
1) it is disposed vertically and meets larger load frequency scope test requirements document;
2) other research techniques of horizontal positioned combination are carried out compared with side crops industry, the sophisticated testing of lower frequency;
3) after being disposed vertically adjusting sample start shaft assignment, be reconverted into it is horizontal positioned tested, improve action shaft pair Middle quality and efficiency.
Technical scheme is as follows:
It is a kind of different to place and test the miniature tension-torsion fatigue testers being orientated, in miniature double column tension-torsions fatigue examinations Test one 90 degree of switching mechanism of installation on machine;Realize that testing machine underbeam above mechanism relative support plate is overturn to horizontally or vertically position Put.90 degree of switching mechanisms, corresponding underbeam fixing screwed hole and center side are provided with double two sides of column underbeam The rotating shaft fixing hole of setting, be vertically arranged in supporting plate corresponding to underbeam fix counter sink, supporting plate top is provided with supporting plate Center ladder hole, the interior rotating shaft that underbeam center side is anchored on by rotating shaft fixing hole of supporting plate center ladder hole, installation Compressed at the rolling bearing being located in the ladder hole of supporting plate center at rotating shaft path, supporting plate center ladder hole with underbeam Surface side is provided with O-ring groove and O-ring, and rectangle locating piece is provided with supporting plate and underbeam seal face;For positioning underbeam Horizontally or vertically fixed position while limit assay owner body upset scope.
Described two sides of underbeam are respectively arranged with 2 groups of 6 underbeam fixing screwed holes, and 2 group 8 is vertically installed with supporting plate Individual underbeam fixes counter sink.
2 groups of 6 screwed holes that described two sides of underbeam are set respectively, including horizontally or vertically 4 peaces of installation site Hole is filled, it is corresponding with the 4 countersunk head hole sites in every group of supporting plate side respectively;Horizontal positioned mounting hole is smaller than being disposed vertically peace Fill pitch of holes;During change trial machine placement location, underbeam above mechanism is set to be overturn centered on rotating shaft to the confined planes of locating piece, Underbeam is set to be fastened with supporting plate by 1 group of 4 screw of correspondence position.
The rotating shaft is a short multi-diameter shaft for being provided centrally with penetrating counter sink, is positioned over supporting plate center ladder hole In, it is fixed by screws in lower beam sides;Rotating shaft compresses rolling bearing inner ring, and bearing outer ring compresses supporting plate, and its thrust is led to O-ring deformation in the ladder hole O-ring groove of supporting plate center is crossed to realize;Supporting plate center ladder hole bearing groove shoulder and support The distance between plate-underbeam seal face, which is slightly smaller than O-ring deformation, causes bearing and bearing outer ring during rotating shaft compression and rotating shaft-underbeam The distance between seal face.
The O-ring groove that surface side is set is compressed with underbeam take groove depth at the ladder hole of the supporting plate center, according to 《GBT3452.3-2005 hydropneumatics O shape rubber seal groove dimensions》Calculating meets that O-ring is pressed during underbeam locking Shrinkage is more than 25%;During upset, O-ring deformation makes certain interval between underbeam and supporting plate be present, while makes supporting plate and rotating shaft Bearing outer ring, inner ring are compressed respectively, and making underbeam, relative support plate rotates around the shaft.
Miniature double column tension-torsion fatigue testers, horizontal support is set in double column cantilever ends when horizontal positioned Post.
Specific operation process is as follows:Testing machine need to be changed into horizontal positioned test method by being disposed vertically test method When, neighbouring position sets horizontal support post at double column cantilever end upper beams, pulls down supporting plate (or lower beam sides) horizontal arrangement 1 group of 4 fixing screws, now with the help of O-ring recovers deforming force, supporting plate and rotating shaft respectively with rolling bearing Outside, inner ring compresses.Double upright post overturning underbeam above mechanisms are held, are compressed to the locating surface of underbeam and locating piece, then locking branch 1 group of 4 fixing screws of fagging (or lower beam sides) vertical arrangement make underbeam be fastened with supporting plate.Testing machine is turned over by horizontal positioned When switching to be disposed vertically method, supporting plate vertical arrangement fixing screws are pulled down, same procedure, which is turned over, to be turn 90 degrees, locking support plate level Arrangement fixing screws, finally pull down horizontal support.
Double miniature tension-torsion fatigue tester structure types of column, including supporting plate, underbeam, double columns, limited block, on Beam, 90 degree of switching mechanisms and horizontal support, axial start control unit and torsion start control unit.Axial start control unit Including linear electric motors, displacement grating scale, load transducer and fixture, reversing start control unit includes torsion motor, rotation volume Code device, torque sensor and fixture, Unit two are separately mounted on underbeam and upper beam;90 degree of switching mechanisms are installed in supporting plate Shaft core position is overturn with respect to underbeam, makes underbeam above mechanism, including axial start control unit, double columns and limited block, upper beam And start control unit is reversed, relative support plate is overturn to horizontally or vertically position.
Underbeam is fixed by screws in trapezoidal supporting plate, and its horizontal or vertical installation site is by fixing on the supporting plate Rectangle locating piece positioning.Double columns are fixed on underbeam by nut.Upper beam both sides are respectively arranged with up/down perforation and are used to pacify The optical axis hole of the double columns of dress, had on adjacent two sides parallel with optical axis hole connect with optical axis hole for by upper beam Hold the locking seam on column tightly, upper beam holds optical axis portion rectangular surfaces width tightly and is less than its twist cell mounting surface width, and Rounding at change width.Upper beam can slide to change its axial location manually along double columns, be pressed from both sides with adapting to change different sizes Tool, connector etc..Limited block is the semicircle of two mode connects for screw, is locked on double columns positioned at correct position below upper beam, limitation Upper beam sliding position, protection underbeam axial unit is with anticollision.Embraced after upper beam position adjustments are suitable by screw in compression locking seam Tightly on double columns.90 degree of switching mechanisms are installed in supporting plate relative underbeam upset shaft core position, make underbeam above mechanism, wrap Include axial start control unit, double columns and limited block, upper beam and reverse start control unit, relative support plate is overturn to level Or upright position.
It is an advantage of the invention that:
1) the 90 degree of upsets of testing machine main body are realized by rotating shaft and rolling bearing, turning operation is simple, mechanism simple;Relatively Due to being provided with O-ring between the supporting plate and beam of upset, can prevent from grinding between supporting plate and underbeam during turning operation Damage, while can also cushioning effect be played to rotary movement, in case testing machine body drops collision in operation;Limited by installing locating piece Body processed overturns scope and its installation site is effectively positioned.Compared with conventional switching mechanism, this structure is used and turned over manually Turn, it is simple in construction, it is easy to operate effectively, suitable for miniature tension-torsion testing machine is horizontal, vertical orientated conversion.
2) main body of the present invention is manually adjusted using double pillar construction forms, upper beam position, and agent structure is simple, is reduced The mechanisms such as unnecessary leading screw, suitable for miniature tension-torsion fatigue experimental device.
3) axially it is separately fixed at torsion start control unit on two beams, the convenient start control unit mould by core Block.
4) upper and lower beam is by screw lock, and fixed that horizontal support is additionally reliably clamped when horizontal positioned, guarantee structure is firm Degree, while avoid being disposed vertically test structure redundancy.
Described above, structure type of the present invention can be oriented horizontally or vertically requirement with the miniature pull and torsion test of flexible adaptation, solution Determined existing tension-torsion fatigue tester can only single-orientated placement the problem of.Testing machine horizontally or vertically places map function letter It is single, and Wear and collision, position of orientation positioning is effective, mechanism simple.Overall structure is simple and reliable, easy for installation, easily Processing.
Brief description of the drawings
Fig. 1 is can the different miniature tension-torsion fatigue tester structural representations (being disposed vertically) placed and test orientation.
Fig. 2 is can the different miniature tension-torsion fatigue tester structural representations (horizontal positioned) placed and test orientation.
Fig. 3 is 90 degree of switching mechanism assembly profiles in the present invention.
Fig. 4 is lower beam structure schematic diagram in the present invention.
Fig. 5 is supporting plate structure schematic diagram in the present invention.
Fig. 6 is positioning block structure schematic diagram in the present invention.
In figure:1. supporting plate, 1-1. underbeams fix counter sink, 1-2. supporting plates center ladder hole, 1-21. ladder hole axles Hold groove shoulder, 1-3.O type ring recess, 1-4. supporting plates-underbeam seal face, 2. underbeams, 2-1. underbeam fixing screwed holes, 2-2. rotating shafts consolidate Determine hole, 3. pairs of columns, 4. limited blocks, 5. upper beams, 6. horizontal support posts, 7. reverse start control unit, 8. axial start controls Unit, 9. locating pieces, 9-1. level (vertical) locating surfaces, 10. rotating shafts, 11. deep groove ball bearings, 12.O type circles.
Embodiment
Below according to accompanying drawing, the present invention is described in further detail:
As shown in Figure 1, 2, it is a kind of different to place and test the miniature tension-torsion fatigue tester structure types being orientated, including Agent structure and 90 degree of switching mechanisms.Agent structure includes supporting plate 1, underbeam 2, double columns 3, limited block 4, upper beam 5, water again Flat support 6, moment of torsion start control unit 7 and axial start control unit 8, locating piece 9.Axial start control unit and torsion are controlled Making moving cell includes motor, displacement grating scale or rotary encoder, load transducer motor and fixture, as unit mould Block is separately mounted on underbeam and upper beam.
The planform of underbeam 2 is rectangular slab, is fixed on by the screw of plate both sides 1 group 4 in two trapezoidal supporting plates 1.Under 2 horizontal or vertical installation site of beam is positioned by the rectangle locating piece 9 being fixed in supporting plate 1.Double columns 3 are bolted On underbeam 2.The both sides of upper beam 5 are respectively arranged with the optical axis hole 5-1 that up/down perforation is used to install double columns, parallel with optical axis hole The locking seam 5-2 being used for by upper beam holding on column connected with optical axis hole is had on adjacent two sides, upper beam is embraced Tight optical axis portion rectangular surfaces width is less than its twist cell mounting surface width, and falls Rouno Cormer Pregrinding Wheel at change width.Beam 5 is stood along double Post 3 is slided to adjust two start control unit spacing.Spacing is fixed on column after fixing by lock-screw.Limited block 4 is The double semicircular rings of screw lock, are fastened on double columns 3 to limit upper beam sliding scale.Testing machine conversion disposed vertically or horizontally, I.e. action shaft is oriented vertically or horizontally test method transformation, is realized by 90 degree of switching mechanisms.When horizontal positioned, on double columns Liang Chu installs horizontal support 6 additional to ensure the rigidity of structure.Supporting plate 1 and the bottom of horizontal support 6 are respectively mounted horizontal adjustment pin.
Shown in Fig. 3,4,5,90 degree of switching mechanisms include the side arrangement of underbeam 22 groups of 6 underbeam fixing screwed hole 2-1 and The rotating shaft fixing hole 2-2 that center side is set, vertically arranged 2 groups of 8 underbeams fix counter sink 1-1, supporting plate in supporting plate 1 1 side surface upper part center ladder hole 1-2, it is installed in the ladder hole 1-2 of supporting plate center and is fastened by rotating shaft fixing hole 2-2 In the rolling bearing 11 that adjacent shafts 10 in the rotating shaft 10 of the center side of underbeam 2, supporting plate center ladder hole 1-2 are installed, branch Fagging through hole compresses the O-ring groove 1-3 and O-ring 12 of surface side with underbeam, and is installed on supporting plate and underbeam seal face 1-4 It is upper to be used to position the horizontally or vertically rectangle locating piece 9 of fixed position while limit assay owner body upset scope of underbeam 2.
As shown in figure 4, being provided with orthogonal 2 groups totally 8 counter sink 1-1 (every group 4) in supporting plate 1, it is arranged Position corresponds to the vertically and horizontally fixed position of underbeam 2 respectively.As shown in figure 5,2 groups of 6 screwed hole 2-1 of the side of underbeam 2, by a left side It it is one group to right 1,3 liang of round, as the fixation of underbeam level or the vertical orientated mounting hole of testing machine;1st, 2 liang of rounds are one group, are made For underbeam is vertically fixed or testing machine is horizontally oriented mounting hole.The position of every group of 4 mounting holes it is vertical with supporting plate 1 respectively or 2 groups of horizontally disposed counter sink 1-1 positions are corresponding.Machine center during in order to reduce horizontal positioned, horizontal positioned mounting hole is (i.e. 1,2 rounds in screwed hole group 2-1) it is smaller than being disposed vertically mounting hole (i.e. 1,3 rounds in screwed hole group 2-1) spacing.
As shown in figure 3, the supporting plate center big footpaths of ladder hole 1-2 coordinate with 11 outer ring gap of deep groove ball bearing, shoulder hole Bearing groove shoulder 1-21 compresses the outer ring of deep groove ball bearing 10, and shoulder hole path coordinates with the path of rotating shaft 10 in larger gap.In ladder At the path of the hole and seal face side of underbeam 2, opens the shallower O-ring groove 1-3 of a diameter larger depth.
As shown in figure 3, the structure type of rotating shaft 10 is short multi-diameter shaft, rotating shaft path is matched somebody with somebody with the inner ring of deep groove ball bearing 11 for gap Close, bearing inner race is compressed by the shaft shoulder.Rotating shaft 10 is provided centrally with penetrating counter sink, is passed to screw and is fastened on the side of underbeam 2 Face.The distance between supporting plate center ladder hole bearing groove shoulder 1-21 and supporting plate-underbeam seal face 1-4 become less than O-ring Shape causes bearing 11 and the distance between bearing outer ring and rotating shaft-underbeam seal face about 0.5mm during the compression of rotating shaft 10.
As shown in fig. 6, the planform of locating piece 9 is rectangular block, side 9-1 is horizontally or vertically locating surface, there is certain hang down Straight degree requires, and locating surface edge chamfering.Locating piece 9 is fixed by screws on supporting plate-underbeam seal face 1-4.
When needing testing machine being changed into horizontal (vertical) placement test method by vertical (level) placement test method, 1 group of 4 fixing screws of horizontal (vertical) arrangement of supporting plate (or lower beam sides) are pulled down, now recover metamorphosis in O-ring With the help of power, outer, inner ring compresses with rolling bearing 11 respectively for supporting plate 1 and rotating shaft 10.Underbeam above mechanism is overturn, to underbeam 2 reach the locating surface of locating piece 9, and 1 group of 4 fixing screws of locking support plate (or lower beam sides) vertical (level) arrangement make underbeam 2 fasten with supporting plate 1.

Claims (6)

1. a kind of different can place and test the miniature tension-torsion fatigue testers being orientated, it is characterized in that in miniature double column tension-torsions One 90 degree of switching mechanism is installed on fatigue tester;Realize testing machine underbeam above mechanism relative support plate overturn to horizontal or Upright position;90 degree of switching mechanisms, corresponding underbeam fixing screwed hole and side are provided with double two sides of column underbeam The centrally disposed rotating shaft fixing hole in face, be vertically arranged in supporting plate corresponding to underbeam fix counter sink, supporting plate top is provided with Supporting plate center ladder hole, supporting plate center ladder hole is interior to be anchored on turning for underbeam center side by rotating shaft fixing hole Axle, is installed on the rolling bearing at rotating shaft path in the ladder hole of supporting plate center, at the ladder hole of supporting plate center with Underbeam compresses surface side and is provided with O-ring groove and O-ring, and rectangle locating piece is provided with supporting plate and underbeam seal face;For Position underbeam horizontally or vertically fixed position while limit assay owner body upset scope.
2. testing machine as claimed in claim 1, it is characterised in that described two sides of underbeam are respectively arranged with 2 groups of 6 underbeams Fixing screwed hole, 2 groups of 8 underbeams are vertically installed with supporting plate and fix counter sinks.
3. testing machine as claimed in claim 1, it is characterised in that 2 groups of 6 screw threads that described two sides of underbeam are set respectively Hole, including horizontally or vertically 4 mounting holes of installation site, it is corresponding with the 4 countersunk head hole sites in every group of supporting plate side respectively; Horizontal positioned mounting hole is smaller than being disposed vertically installation pitch of holes;During change trial machine placement location, make underbeam above mechanism Upset makes underbeam be fastened with supporting plate to the confined planes of locating piece by 1 group of 4 screw of correspondence position centered on rotating shaft.
4. testing machine as claimed in claim 1, it is characterised in that the rotating shaft is provided centrally with penetrating the short of counter sink for one Multi-diameter shaft, it is positioned in the ladder hole of supporting plate center, is fixed by screws in lower beam sides;Rotating shaft is compressed in rolling bearing Circle, bearing outer ring compress supporting plate, and its thrust is realized by O-ring deformation in the ladder hole O-ring groove of supporting plate center;Branch The distance between fagging center ladder hole bearing groove shoulder and supporting plate-underbeam seal face, which are slightly smaller than O-ring deformation, causes bearing The distance between bearing outer ring and rotating shaft-underbeam seal face when being compressed with rotating shaft.
5. testing machine as claimed in claim 1, it is characterised in that at the ladder hole of the supporting plate center with underbeam seal face The O-ring groove that side is set takes groove depth, meets that O-ring obtains compression ratio more than 25% during underbeam locking.
6. testing machine as claimed in claim 1, it is characterised in that horizontal support is set in double column cantilever ends when horizontal positioned Post.
CN201510497033.6A 2015-08-12 2015-08-12 Can the different miniature tension-torsion fatigue testers placed and test orientation Expired - Fee Related CN105021475B (en)

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Publication number Priority date Publication date Assignee Title
CN107179252B (en) * 2017-04-06 2019-10-18 华南理工大学 A kind of typical secondary skimming wear experimental machine and the test method of rubbing of change gravity orientation
CN107192612B (en) * 2017-06-02 2019-08-13 东北大学 A kind of tension-torsion fatigue test board

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CN103926145A (en) * 2013-01-15 2014-07-16 安踏(中国)有限公司 Shearing and compression performance test equipment
CN104764576A (en) * 2015-04-16 2015-07-08 三峡大学 Stretching, twisting and bending combined effect vibration testing machine for flexible rod piece
CN205120511U (en) * 2015-08-12 2016-03-30 天津大学 Can differently place and turn round fatigue testing machine with miniature drawing of testing orientation

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Publication number Priority date Publication date Assignee Title
CN202471510U (en) * 2012-03-12 2012-10-03 纬创资通股份有限公司 Clamping tool
CN103926145A (en) * 2013-01-15 2014-07-16 安踏(中国)有限公司 Shearing and compression performance test equipment
CN103792152A (en) * 2014-01-16 2014-05-14 海洋化工研究院有限公司 Special impact test machine with adjustable chain for anti-skid coating
CN104764576A (en) * 2015-04-16 2015-07-08 三峡大学 Stretching, twisting and bending combined effect vibration testing machine for flexible rod piece
CN205120511U (en) * 2015-08-12 2016-03-30 天津大学 Can differently place and turn round fatigue testing machine with miniature drawing of testing orientation

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